Machine for making printing-plates.



J. S. DUNCAN.

MACHINE FOR MAKING PRINTING PLATES.

APPLICATION FILED APR-6,1311- 1 183 35? Patented May 16, 1916.

9 SHEETSSHEET I.

WITNESSE n IMVEVANTOR.

RTTURNEEYJ I. s. DUNCAN.

MACHINE FOR MAKING PRINTING PLATES.

APPLICATION FILED APR.6,19II.

1 ,1 83,35?" Patented May 16, 1916.

9 SHEETS-SHEET 2.

J. S. DUNCAN.

MACHINE FOR MAKING PRINTING PLATES.

APPLICATION FILED APR. 6, ISII.

1 ,1 $3.357, Patented IIIIay 16, 1916.

9 SHEETSSHEET 3- I IWVENTUW Fwfi 44 I, MM/

I. S. DUNCAN.

MACHINE FOR MAKING PRINTING PLATES.

APPLICATIONIFILED APR. 6. 911. 1 18835? Patented May16,1916.

s SHEETS-SHEET 4.

I I I I I. g II II II Im ENTOR. I M

ATTORNEYIS 1, s, DUNCAN MACHINE FOP. MAKlNG PRINTING PLATES APPLICATEOH FILEO APR. 6, 13m! 1 a) 2; 235;? a a) Patented May 16, 1916 9 $HEETS-SHEET 5.

/ MAW 9 SHEETSSIIEET 5.

INVENTOR.

m mm m E w I an!) I. DUNCAN. MACHINE FOR MAKING PRINTING PLATES.

APPLICATION FILED APR-6, I9lI.

x ws sw 3. 5. DUNCAN.

MACHINE FDR MAKiNG PRINTING PLATES.

FILED APR. 6, 2931.

APPLICATION MACHINE FOR MAKING PRINTING PLATES. APPLICATION FILED APR.6,191T.

Patented May 18, 1916.

- 9 SHEETS-SHEET B.

HTiM2.w.A I8 3940?! 6955 OrSAOlHO ATT RNEYJ J. S. DUNCAN. MACHINE FOR MAKING PRINTING PLATES.

APPLICATION FILED APR- iS, I9II.

Patente May 16, 1916.

9 SHEETS-SHEET 9- IN ENTOR. W I /7 E j I ATTOR w E m5 Wmmssms,

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JOSEPH S. DUNCAN, OF CHICAGO, ILLINOIS. ASSIGNOR 'lO ADDRESSOGRAPH COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MACHINE FOR MAKING PRINTING-PLATES.

Specification of Letters Patent.

Application filed April 6, 1911. Serial No. 619,209.

'1 '0 all whom it may concern:

Be it known that I, Josurn S. DUNCAN, a. citizen of the United States. residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Machines for Making Printing-Plates, of which the following is a specification.

This invention relates to machines for making printing plates more especially for use in addressing machines and in which the printing characters are formed by pressing them up directly from the plate.

The object of my present invention is to provide a machine of this character adapted for rapid operation and which will work with little noise.

Further objects of the invention are to produce the characters in relief on the plate by a rolling action whereby the heads carrying the character forming punches and dies may operate continuously: to control the operation of the punches and dies by a keyboard; to permit the plate to travel a limited distance with the punch and die during the character forming operation and to automatically feed the plate a character space at each operation of the machine; and to provide a simple but strong and substantial machine which can be easily operated, which requires comparatively little skill for its operation and which is controlled entirely by operating the keys of the keyboard.

Further objects of the invention will appear hereinafter in the detailed description of the embodiment of the invention illustrated in the accompanying drawings, in which- Figure 1 is a front elevation of the machine. Fig. 2 is a side elevation of the front portion of the machine. Fig. 3 is a sectional view on the line 3-3 of Fig. 2. Fig. 4: is a front viev of the machine, partly in section and partly broken away, with the carriage and its track, and the die and punch heads removed. Fig. 5 is a side elevation, partly in section, of the'upper portion of the machine, with part of the main frame broken away. Fig. 6 is a detail sectional view on the lin66 of Fig. 5. Fig. 7 is an enlarged front elevation, partly in section, showing the carriage and its operating mechanism and parts of the die heads. Fig. 8 is an enlarged sectional view showing substantially the parts illustrated in Fig. 7. Fig. 9 is a Fig. 15 is a sectional view on the line 15-15 of Fig. 14 showing a part of the printing plate. Fig. 16 is a detail sectional view of the plate clamping mechanism. Fig. 17 is a detail sectional view of the spring device for feeding the carriage.

In the drawings, 1 designates the main frame of the machine and this frame can be made of any suitable size and shape adapted for the purpose. A punch head 2 is revolw bly mounted on a stud shaft 3 secured in the main frame and this head carries a plurality of radially disposed punches 4 spaced apart around its periphery and all located in the same plane perpendicularito the axis of the head. The punches are arranged in radially disposed grooves 5 in the head (Fig. 10) and they are held in place in the grooves by a cover plate 6 (Fig. 1). A cam adjusting ring 7 has screw-threaded engagement with a boss 8 on the head and this ring operates in a recess 9 in the head within the circle described by the inner ends of the punches (Fig. 8). The upper face 10 of the adjusting ring is beveled so that by turning the ring 7 relative to the punch head the punches can be adjusted radially in the head. A locking screw 11 is provided to secure the adjusting ring in fixed position.

A die head 12 is rigidly mounted on a shaft 13 which is supported in the main frame of the machine and carries a belt wheel 14 to which power may be applied in any suitable manner. The die head is located immediately above the punch head and it is provided with a plurality of radially disposed dies 15 corresponding in number and relative arrangement with the punches 'in the punch head.

The dies are slidably arranged in radially disposed grooves 16 in..the die head (Fig.

10) and they are held in place therein by a face plate 17 (Fig. 1). The punch and die heads are supported in adjacent relation to each other and the punches and dies are arranged therein in pairs adapted to aline with each other when passing through the plane of the the heads, so that any die and this cam may consist (as shown in Figs. 7 and 8) ofa rock shaft or bar 20 arranged 1n the head parallel with the axis thereof and back of each die and having a cam face 21 to engage the inner end of its.

die. An arm is pivotally mounted on a ring 23 and is engaged at 2-l with the die. A spring 25 attached to the inner end of the arm and to the die head operates on the arm to hold the die in retracted position and in engagement with the cam, and also returns the die to normal position after it has been operated. The cam 20 is fastened to a rod 26 which extends rearward of the die head .and is supported at its rear endin a frame 27 rigidly mounted on the shaft 13 to turn with the die head. An arm 28 is rigidly mounted on the rod 26 and is held by a spring 29 fastened .thereto and to the frame 27 to hold the die operating cam in normally retracted position. A trip lever 30 is pivotally mounted at 31 on the main frame and it carries'a tripper 32 which is adapted to be projected upward into the path of movement of its corresponding arm 28 to engage said arm and thereby rock the rod 26 and cam 20 to project the die outward into operative position (Fig. 4). The trip lever 30 is connected by a rod 33 with a key lever 3-1 (Fig. 3) carrying a key The frame 27 is in the general form of a helix,

the rods 26 vary in length and the arms 28 are arranged on the rods. axially of the die head in different radial planes. Each die is provided with operating mechanism as just described and is operable independent of the other dies and all of the keys are conveniently located in front of the machine in the form of a keyboard similar to a typewriter, the arrangement of the keys following the standard typewriter keyboard, or being otherwise arranged, as desired.

A carriage 36 is arranged to travel across the front of the machine on a bar 37 which is fastened to the main frame. The carriage is preferably provided with rollers 38 to engage the track 37 for the purpose of reducing'the friction (Figs. 7, S). Rods 39 are secured in the carriage and a plate frame 40 is slidably mounted on the rods and is adapted to be djusted at right angles to the direction of travel of the carriage to linespace the .plate.

The lower jaw ll of the plate clamping device is pivotally mounted on a cam rod 42 which is slidably mounted in the plate frame 40 and is adapted to be moved in a direction parallel with the front of the machine and at right angles to the direction of adjustment of the rods 39, (Figs. 9, 16). The upper jaw 43 of the clamping device is pivoted 011 the rod H which is mounted rigidly in, the lower jaw 41. The upper jaw has projections 45 which engage the rod 42 and the latter is provided with recesses 42 to receive the projections and thereby permit the upper jaw. to open. A crank 46 is rigidly mounted on'the rod 42 and is connected by a spring 47 with the lower jaw. The clampingdevice is adapted to carry a plate 48 between the punches and dies and the plate frame is movable forward and backward to line-space the plate between the punches and dies. The forward movement of the plate frame is effected by pushing upon the handle 49' (Fig. 8) and the plate frame is locked in adjusted position by a pawl 50 pivotally mounted at 51 on the carriage and normally held in engagement with a rack 52 on the plate frame by a spring The spring is preferably of sutiicient strength to pull the plate frame back to retracted position when the pawl is released by operating the handle The plate is inserted between the jaws of the clamping device when the earriage is at the limit of its travel to the right in which position the plate-will clear the die head. To facilitate the insertion and removal of the plate I provide for swinging the clamping device into the position shown in broken lines in Fig. 16, the lower jaw engaging the stop on the plate guide 56 which is a part of the plate frame. WVhen the crank 46 is turned with the shaft 42 the spring 47 will pull the clamping jaws up from the position shown in full lines to the position shown in broken lines in Fig. 16 and when the lower jaw engages the stop to limit the swinging movement of the lower jaw a continued movement of the crank and shaft will carry the shaft around until the recesses 42 engage the projections 45 to permit the upper jaw to swing open by gravity,

or at least to release thp clamping action on the plate to permit the removal of the plate from the jaws and the insertion of a blank plate. the jaws the clamping. device is swung back into substantially horizontal position, the carriage is adjusted to initial position to the left and the plate frame is moved for ward, if necessary, to carry the plate into position between the punches and dies and locked in this position by the pawl 50. The parts may be proportioned to permitthe clamping device to be swung to release position when the plate frame is retracted at any' position of the carriage betweenthe After the blank plate is inserted in limits of its travel, if desired, but it has been found convenient to arrange the parts and devices as shown in the drawings for the swinging of the clamping device at the end of the travel of the carriage.

The plate is supported by the clamping device close to the orbit in which the punches travel but provision is made for supporting the plate just outside of said orbit to prevent accidental engagement witl. the punches. A. roller 57 (Figs. 79) is supported in a bracket 58 pivotally mounted at 59 on the main frame of the machine. This roller is pressed upward by a spring 60 which is arranged on a screw 61 fastened in the main frame and limiting the upward movementof the roller. The construction is such that the roller .37 will support the clamping device to normally sustain the plate 48 in a slightly tilted position clear of -the punches, as shown in Fig. 8, but the supporting roller will yield under the lpressure of the die during the pressing operation to permit the die and punch to operate.

Thecarriagetravels step by step from left to right to character space the plate and this movement is ell'ected by an escape nient operated through suitable connections from the die head. This escapement comprises two dogs (32 and (33 arranged to engage a toothed rack bar ill on the carriage, and aspring barrel 65 (Fig. 17) which pulls on the strap or tape (56 attached to the carriage. The dog (32 is carried by a lever 67 which is mounted on a pivot pin (38 projecting forwardly from the bar 37. The dog (33 is carried by a lever 39 mounted on a pivot pin 70 also projectinjg forwardly from the bar 37. The dog levers (S7 and (39 are pivotally mounted on the front of the bar 37 and a. lever 71 is pivotally mounted on the pin 70 behind the bar 37 and carries at one end a pin 72 which projects through a slot 73 in the bar and between the ends (37 and 69' of the dog levers. A spring 7a is attached to the lever 67 at T l and to the lever 69 at 74", normally holding the dog (52 in. engagement l-with the rack and the dog 63 out of engagement with the rack. A lever 75 is pivetally mounted at 76 on the frame and is provided with a toe 77. This lever is connected by a link 78 with another lever 79 pivoted at 80 on the main frame. A spring 81 connected to the lever 75 and the main frame pulls the levers 75 and 79 to thewleft and the latter is engaged bya stop 82 the main frame. A pin 83 on the lever 7 9 is arranged to engage a pawl 84 on the lever 71. ,This lever is normally held in the position shown in Fig. 7 by a spring 85 attached to the pawl and t0 the lever 71. :WVhen the lever 79 carries the.

pin 83 tog'the right in Fig. 7 it will engage the pawl} 84 but the latter will yield and permit the pinto ride thereunder. On the return movement of the lever 79, under the influence of the spring 81, the pin 83 will engage the pawl 55% and swing the lever 71 011 its pivot 70 as the pin 83 rides under pawl Sl. lVhen-the lever 71 is thus swung the pin 72 will swing lever 67 on its pivot (58 and release dog 62 from rack H, but be fore the dog is thus released the spring Tl, which is attached to lever 67 and lever (it), will swing said lever (39 to carry dog (33 into engagement with the rack. After the pin 83 passes pawl S-l spring 74, pulling upon lever (57, will swing the end (37 of said lever up, carrying the dog 62 into engagement with the next tooth of the rack and moving the pin 72 up to swing lever 71 back to its normal position. and also swing lever (39 up to normal position and carry dog (33 out of engagement with the rack. The die operating cams each project forwardly through the die head and are provided with projections 20 which normally clear the toe 77, but when one of these cams has been turned to throw a die into operative position the projection thereon will engage the toe and swing lever 75 to the right until the cam is turned back to normal position which will release the projection from the toe and per nlit the lever 75 to be swung back to normal position by the spring 81, the engagement of lever 79 with stop 82 limiting this return movement 01 the lever 75 as well as lever 79. Thus it will be observed that the carriage is fed a space at eachpressing operation of the machine and the carriage feeding devices are operated by the die cam but after the pressing operation is completed. To feed the carriage a space without operating any of the punches and dies 1 provide a lever 86 which is attached to pin 72 and is operated by key 87 to actuate the escapement.

The character is formed on the plate by a rolling action of the punch and die and it is necessary that the plate should move with the punch and die during the pressing operation. To accomplish this I provide a rack 88 (Fig. 7) on the plate frame and a dog 89 carried by av lever 90 which is pivotally connected at 91 to lever 79. A spring 92 connected to levers 79 and 90 holds the dog 89 against a pin 93 on the main frame and out of engagement with the rack 88. When the levers 75 and 7!) are swung to the right, as hereinbetore described, the lever 90 will also be moved to the right and the dog-89 will rise and engage the rack bar 88 and move the plate frame to the right with the punch and die in operative position until the lever 75 is released from the cam of the operating die. The free end of "the lever 90 rides on a grooved roller ill on the main frame which pushes the lever upward and insures the engagement of the dog with the rack bar. When the pawl is disengaged from the rack bar a spring 95 attached to the plate frame and to the carriage will return the plate frame to initial position.

The movement of the carriage is limited by the stops 96. The movement of the plate frame relative to the carriage is limited in its movementto the left by engagement of the plate frame with the carriage and it would be limited in its movement to the right by engagement of the plate frame with the carriage if this movement extended that far but ordinarily the plate frame will not travel to the right to engage the carriage before the dog 85) is released from the rack.

It will be observed that the feeding movement of the carriage elfects the character spacing and while the plate frame returns to its initial position against the carriage after each pressing operation of the machine the carriage has by that time advanced a space. Thus the plate frame and the carriage are movable conjointly and relatively in a direction across the front of the machine and the plate frame can also be moved forward and backward independently of and relatively to the carriage for line spacing.

To insure the tripper remaining in elerated position to engage the arm 28 during the engagement of the arm therewith I provide a latch 97 (Figs. l. 5.) which is pivotally mounted in the. main frame and normally engages a shoulder 98 on each of the trip levers 30. When a key isoperated to swing its trip lever up a projection 99 on the trip lever will engage thelatch E)? and the trip lever is thereby held in elevated position during the pressing operationl A spring 100 attached to an arm 101 of the latch and to the main frame holds the latch in engagement with the trip levers. A pin 102 on the lever iii) is arranged to engage an arm 10?) on the latch to release it from engagement with the trip lever after the punch and die have operated.

My invention and its operation will be readily understood from the foregoing de-' scription in connection with the accompanying drawings.

As has been stated before, the character is produced in the plate by a rolling action of the punch and die on the plate which is positively actuated to travel with the punch and die while they are in operative position so that during the pressing operation there will be no movement of the plate. relative to the punch and die'. WVhen a die is thrown into operative position, as shown in broken .lines in Fig. 7, it is projected outward from the normal orbit of travel of the dies sufficiently to engage the plate aml cooperate with its punch to press a character in relief on the plate. This operation can be rapidly performe'd without necessitating any intermittent action of the punch and die heads which revolve continuously at a constant and corresponding rate of speed. The operation of the machine'is controlled entirely by the key levers and whehevenone of these levers is operated its punch and die will press a character in the plate, and the carriage wilLbe advanced a character space to position the plate to receive another character. 1

A lever 10% is pivotally mounted on the carriage and ar anged to engage a roller 105 on the dog lever (39 to lift said lever and thereby disengage dog (v.2 from rack (A and permit the free movement of the carriage in either direction. A pointer 106 on the carriage is arranged above a scale 107 on the bai37 to indicate the character spacing.

What I claim and desire to secure by Letters Patent is: I

1. A machine for firming raised printing characters on printing plates, comprising a pair of rotatable heads mounted on parallel axes. an annular series of dies upon the periphery of one of the heads, an annular series of punches upon the periphery of the other head. the series of punches and the series of dies being in the same plane, and rotatable cams for selectively bringing companion dies and punches into cooperative relation, the paths of such selected dies and punches intersecting during the characterforming operation.

2. A machine forforming raised printing characters on printing plates, comprising a pair of rotatable heads, an annular series of dies on the periphery of one of the heads, an annular series of punches onthe periphery of the other head. the series of dies and punches being in the same plane,1neans to'selectively project the dies beyond the periphery of the die head. the path of a projected die intersecting the path of its companion punch during the chameter-forming operation, means to simultaneously rotate the two heads at the same rate of speed, and bodily movable means controlled by the projecting means for moving the plate conjointly with said punches and dies while engaged thereby.

3. In a machine for making printing plates, the combination of a pair of heads mounted on parallel axes, aplurality of punches radially arranged on one head, a plurality of companion dies radially arranged on the other head in position to co operate witlrsaid punches upon rotation of the heads, bodilymovable means for holding a plate between the heads, means for continuously revolving the heads, and means for projecting a predetermined die into cooperative relation with its companion punch, the punch and die being held against cndwise movements on the heads during the character-forming operation, whereby a rality of radially disposed character forming devices carried by each of said heads, the character forming devices in both heads being disposed at all times in a common plane, means for adjusting the devices'in one head radially of the head, individual cams for each of the character forming devices in the other head, and means for operating a predetermined cam whereby the device actuated by said cam is projected radially of the head into coiiperative relation with its companion device on the other head.

.5. In a machine for making printing plates, the combination of a pair of heads, character forlning devices radially arranged in each of said heads, all of said character forming devicesbeing disposed'in a common plane, means for simultaneously adjusting the radial position of the devices in one head, and means for individually projecting the devices of the other head into c0- operative relation with-the adjusted devices.

6. A machine for forming raised printing characters on printing plates, comprising a die traveling in an' arcuate path, means to project said die, a punch traveling in an arcuate path, the paths of the die when projected and the punch being in the same plane and said paths intersecting during the character-forming operation, whereby the print ing characters are formed by a rolling action, and bodily movable means controlled by the projecting means for moving Work during the character-forming operation.

'4". A machine for forming raised printing characters on printing plates, comprising a traveling in an arcuate path, means to project said die, a punch traveling in an arcuate path, the paths of the .die when projected and the punch being in the same plane and said paths intersecting during the character-forming operation, whereby the print ing characters are formed by a rolling action, a bodily movable work holder, and means controlled by the projecting means for moving the work holder -to feed the plate during the character-forming operation.

8. A machine for forming raised printing characters on printing plates, comprising a die traveling in an arcuate path, means for projecting said die. a punch traveling in an arcuate path, the paths of the die when projected and the punch being in the same plane and said paths intersecting during the clmracter-torming operation, whereby the printing characters are formed by a rolling action. a bodily movable work holder, and means controlled by the projecting means to move the Work holder at the same rate of speed as that of the character-forming devices during the character-forming operation. p

9. In a machine for making printing w plates, a head, a plurality of radially disposed character forming devices at the periphery of said head mounted so as to be immovable axially of the head, and circular means on said head disposed within the 5 inner ends of the devices for engaging said devices to adjust them radially of the head.

10. In a machine for making printing plates, a head, a plurality of radially disposed character forming devices at the g0 periphery of said head, and means on said head for engaging all of said devices to simultaneously adjust them radially of the head upon transverse movement of said means. i

11. In a machine for making printing plates, a head, a plurality of radially disposed character forming devices at the periphery of said head, and means on said head having a tapered peripheral face for no engaging the inner ends of all of said devices to adjust them simultaneously and radially of the head.

12. In a machine for making printing plates, a head, a plurality of radially disposed character forming devices at the periphery of said head, and a tapered adjusting ring engaging the inner: ends of said devices and movable transversely to adjust them radially of the head.

13. In a machine for making printing plates, a head, a plurality of radially disposed. character forming devices at the periphery of said head, and a ring revolubly mounted on the head and having a beveled face engaging the inner ends of all of said devices to adjustthem radially of the head.-

l t/In a machine for making printing plates, a head, a plurality of radially disposed character forming devices at the periphery of said head. a ring having screwthreaded engagement with the head, a beveled face on said ring engaging the inner ends of all of said devices whereby said devices are simultaneously adjusted radially of the head when the ring is turned, and means for locking said ring in fixed position.

15. In a machine for making printing plates, the combination of a head, a plurality of radially disposed character form-,lzo ing devices, means for continuously operat ing said head with the faces of the character forming devices traveling in an orbit out of operative position, and an individual cam device on the head for each character forming dcvicc adapted tobe operated to project said device radially of the head .into operative position.

16. In a machine for making printing plates, the combination of a continuously rewe "volving head carrying a plurality of character forming devices radially disposed at its periphery and movable radially of. the

head only, a rotatable cam device permanently engaging each of said character formingdevices and adapted when rotated to move them radially into operative position, trippers for actuating said cam devices, and a plurality of keys for operating said trip pers.

17. In a machine for making printing plates, the combination of a continuously revolving head carrying a plurality of character forming devices radially disposed at its periphery, cam devices engaging said character forming devices to move them radially into operative position, rods connected to said cam devices, arms arranged on said rods and in difi'erent planes radially of the head, trippers to engage said arms, and a plurality of keys connected to and for operating said trippers.

18. In a machine for making printing -plates,-the combination of a continuously revolving head, a plurality of character forming devices radially disposed in the head at itsperiphery, cam devices carried by the head and engaging the inner ends of said character forming devices, and means for operating any one of said cam devices to project its character forming device radially of the head and Without interrupting the movement of the head.

19. In 'a machine for making printing plates, the combination of a pair of heads carrying cooperating character forming devices radially disposed at their periphery and arranged in pairs, said devices normally traveling in circular orbits out of operative '40 position, means for revolving said heads continuously-and synchronously in opposite directions, and means for projecting any one of the devices in one head radially into operative relation to the correspondingde- 5 vice in the other head to engage an interposed plate and form a character thereon, and bodily movable means controlled by said projecting means for moving the plate conjointly with said character forming devices While engaged thereby.

20. In a machine for making printing plates, the combination of a pair of continu ously revolving heads carrying cooperating character forming devices at their periphcries, means for moving any one of the devices in one of said heads radially into operative relation with the corresponding d vice in the other head to engage an interposed plate and form a' character thereon,

and bodily movable means controlled by said moving means for positively feeding said plate While,engaged by said devices and at the same rate of speed.

21. In a machine for making printing plates, the combination of a pair of continuously revolving heads carrying character forming devices, cam devices on one head for independently operating the character forming devices thereon to throw any one of them into operative relation to its corresponding device on the other head, means for holding a. plate between the orbits of travel of said heads, and means operated by the cam device for moving the plate while engaged by said character forming devices and at the same rate of speed.

22. In a machine for making printing plates, the combination of a pair of cooperative character forming devices movable in arcs of circles, means for operating said devices to form a character on an interposed plate, means for moving said plate. conjointly with said devices While engaged thereby and for returning said plate to initial position after the forming operation is completed and means for feeding said plate by a step by step movement.

23. In a machine for making printing plates, the combination of a pair of cooperative character forming devices movable in arcs of circles, means for operating said devices to form a character on an interposed plate, means for moving said plate con jointly with said devices during the forming operation and for returning said plate to initial position after the forming operation is completed, and means for feeding said plate a space after each character is formed.

24. In a machine for making printing plates, the combination of devices for form ing a character on an interposed plate, a frame carrying said plate and movable conjointly with said devices while the plate is engaged thereby, a carriage carrying said frame, and means for moving said carriage to character space the plate and frame after each forming operation.

25. In a machine, for making printing plates, the combination of devices for forming a character on an interposed plate, a movable carriage, and a I frame carrying said plate and mounted on said carriage, aid frame being movable relative to said carriage and conjointly With said character forming devices during the forming operation. I

In a machine for making printing plates, the combination of devices for forming a character on an interposed plate, a carriage, means for moving the carriage for character spacing, and a. frame carrying the plate and mounted on the carriage and movable relative to the carriage conjointly with the character forming devicesduring the forming operation. 1 i

27. In a machine for making printing plates, the combination of devices for formmg a character on an interposed plate, a

carriage, means for movin the carriage for character spacing, a frame carrying the plate and mounted on the carriage and movable relative to the carriage conjointly with the character forming devices during the forming operation, and means for returning the frame to initial position on the carriage after the forming operation is completed.

28. In a machine for making printing plates, the combination of a carriage, means for moving the carriage for character spacing, a frame carrying the plate and mounted on the carriage, means for moving said frame relative to the carriage during the character forming operation and returning said frame to initial position on the carriage after the forming ope -ation is completed, and means for adjusting said frame transversely of the carriage for line spacing the plate.

29. In a machine for forming raised printing characters on a printing plate, the combination of a punch and a die, a rotatable cam to bring the punch and die in cooperative relation, and means to swing the punch and die in respective intersecting arcuate paths to form a printing character by a rolling action, substantially as described.

30. In a machine for forming raised printing characters on a printing plate, the combination of a bodily movable support for a printing plate, a die mounted to travel in an arcuate path, and a punch mounted to travel in an arcuate path, said die and punch being adapted to cooperate to form,

by a rolling action, a character on a prmt-. ing plate, held on said support.

31. In a machine for forming raised printing characters on a printing plate, the combination of a die mounted to travel on an arcuate path, a punch mounted 'to travel in an arcuate path, said paths intersecting to allow said die and punch to cooperate, and a bodily movable support'adapted to hold and move a printing plate in a plane tangential to the intersecting path ofsaid (lie and punch, whereby a character is formed on said printing plate by a rolling action.

32. In a machine for forming raised printing characters on a printing plate, the combination of a die mounted to travel in an arcuate path, a punch mounted to travel in an arcuate path, said paths intersecting to allow said die and punch to cooperate, and a bodily movable support adapted to move a. printing platelongitudinally and trans-- versely in a plane tangential to the intersecting paths of said die and punch, whereby a character is formed on said printing plate by a rolling action.

33. In a machine for forming raised printing characters on a printing plate, the combination of a pair of rotatable heads, a plurality of character forming elements on the peripheries of each of said heads, said character forming elements in cooperating position, whereby said printing plate may be moved longitudinally and transversely in a plane tangential to the peripheries of said .rotatable heads.

35. In a machine for forming raised printing characters on a printing plate, the combination of a pair of rotatable heads, a plurality of character forming elements carried by each of said heads, means for selectively moving the character forming elements on one of said heads to positions, wherein they are adapted to cooperate with the character forming elements on the other of said heads, and a bodily movable carriage, adjacent said heads, adapted to support a printing plate between said cha 'acter. fornr ing elements in cooperating position.

36. In a machine for forming raised printlng characters on a printing plate, the

combination of a pair of rotatable heads, a plurality of character forming elements carr1ed by each of said heads, said character forming elements being adapted to cooperate as the heads are rotated, means for radially adjusting m a single operation all of the character forming elements on one of said heads, and a bodily movable carriage, adja-. cent said heads, adapted to support a printmg plate between said character forming elements in cooperating positions.

37. In a machine for forming raised printing cha iacters on a printing plate, the combination of a pair of rotatable heads, a plurality of character forming elements carried by each of said heads, 'means for-selectively moving the character forming elements on one of said heads to positions, wherein they are adapted to cooperate with the character forming elements on the other of 'said heads, means for radially adjusting in a single operation all of said last mentioned character forming elements, and a bodily movable carriage adjacent said heads, adapted to support a, printing plate between said character for-mi; elements in coiiperating position.

38. In a machine for forming raised printing characters on a printing plate, the combination of a pair of rotatable heads, a

plurality of character forming elements carried by each of said heads, means for selectively moving the character forming elements on one of said heads to positions, wherein they are adapted to cooperate with the character forming elements on the other of said heads, a bodily movable carriage adjacent said heads adapted to support a printing plate between saidvchai'acter forming elements in cooperating position, and means on said selectively moving means to control the movement of said movable carriage.

39. In a machine for forming raised printing characters on a printing plate, the combination of a pair of rotatable heads, a plurality of character forming elements on each of said Heads, means for selectivelv moving the character forming on one of said heads to positions, wherein they are 20 adapted to cooperate with thecharacter forming elements on the other of said heads, a bodily movablev carriage, adjacent said' heads, adapted to support a printing plate between said character forming elements in 25 cooperating position, means on said selectively moving means to control the move ment of said movable carriage'ln one diree tion, and means for controlling the move' ment of said movable carriage in a direction 30 

